10001539001 has 4 divisors (see below), whose sum is σ = 10021188900. Its totient is φ = 9981889104.

The previous prime is 10001538971. The next prime is 10001539061. The reversal of 10001539001 is 10093510001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3983503225 + 6018035776 = 63115^2 + 77576^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001539001 - 2¹⁰ = 10001537977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001539061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9824186 + ... + 9825203.

It is an arithmetic number, because the mean of its divisors is an integer number (2505297225).

Almost surely, 2^10001539001 is an apocalyptic number.

It is an amenable number.

10001539001 is a deficient number, since it is larger than the sum of its proper divisors (19649899).

10001539001 is an equidigital number, since it uses as much as digits as its factorization.

10001539001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19649898.

The product of its (nonzero) digits is 135, while the sum is 20.

The spelling of 10001539001 in words is "ten billion, one million, five hundred thirty-nine thousand, one".